Machine for bending wire



(No Model.)

Y OQF. BEAMAN.

MACHINE FOR BENDING WRE.

Patented Apr. l, 1884.

WlTN ESSES UNITED STATES PATENT @@FFCFI' u CHARLES F. BEAMAN, OFCHICAGO, ILLINOIS, ASSIGNOB- TO WELLS- VILLE PLATE AND SHEET IRONCOMPANY, OF VELLSVILLE, OHIO.

MACHINE FOR BENDING WIRE.

SPECIFICATION forming part of Letters YPatent No. 296,269, dated April1,1884.

Application filed February t), ISB-l. (No model.)

To @Z3 whom it may concern,.- Vsupporting the shaft B by a hook, y, alsopiv- Be it known that l', CHARLEs F. BEMAN, oted to the table. i ofChicago, in the county of Cook and State of On the shaft B is detachablysecured the Illinois, a citizen ofthe United States, tempoformer H,which in this case is rectangular in 5 5 5 rarily residing atlellsville, county of Coshape, and consists of a cast-iron hub, h, onlnmbiana, State ot' Ohio, have invented or disthe`e`nds of which areformed the disks JL', said covered a new and useful Improvement inAdisks being connected by the cross-arms h2. A Machines for BendingWire; and I do hereby The outer iaces of these arms h2 are recesseddeclare the following to be a full, clear, conto receive the steelstrips hwhich are secured 6oV ro oise, and exact description thereof,reference therein byscrews or any other suitable means.

being had to the accompanying drawings, The former is secured to theshaft B by setmaliing a part of this specilcation,in whichscrews or anyother equivalent device. like letters indicating like parts- At one endof the table A, on each sideof a Figure l is a view in elevation of oneend recess, A', formed therein,in whichthe former 65 i5 of my machine.Fig. 2 is a top plan view of H revolves, are secured the standards Z l',the same, the drophammer being removed. which serve as guides to thereciprocating Fig. 3 is a detail view ot' the tension device. hammer L,which is provided with wings fm, The object of my invention is to sobend which overlap the flanges Z2 ofthe standardsl continuous lengths ofwire that regular shapes Z'. The distance between the standards Z Z is7o 2o maybe produced by cutting the bent wire at greater than the widthof the hammer and its regular intervals; and to this end my inven.-wings, thereby allowing of a slight lateral 0stion consists in theconstruction and combicillation of the hammer during its vertical nationof parts, all as' more fully hereinafter movements. rIhe hammer L isconnected to described and claimed. the standard Z by the arms u,pivoted at their 75 2 5 In suitable bearings, a, secured to the bed endsto the hammer and standard, respect- A, is mounted the shaft B, and onthis shaft ively. Y l' B, between the bearings a, is mounted the To abracket, O, are secured a tension degcar-Wheel D, said, shaft andgear-wheel being vice, o, and straightening devices p, and the soconnected together by a spline on the gearwire tobe bent is led from asuitably-located 8o 3o wheel and a groove, b, in the shaft B that theyreel through the tension and straightening shaft will revolve with thegear-wheel, and devices, and through an opening in the stand- 'will alsonieve longitudinally through it. rIhe ard Z' to the former, around whichit is to be inner end ofthe shaft B is screw-threaded, as bent. Thepowerwheel R is loosely mounted shown at b', and passes between the twoparts on a shaft, o', mounted in bearings s, bolted to 85 35 c c of adivided nut, C. The parts c c of the the bed A, and on the shaftr issecured aspurdivided nut are mounted in ways in a block, wheel, S, whichmeshes with the gear-wheel d, and adapted to slide toward and from eachD. Motion is communicated from the powerother therein. wheel R tothe'sha-ft r by aclutch mechanism,

In the top of the parts@ c of the divided XV, operated by the lever zo.Y 9o 4o nut are formed the slots c', and in these slots The tensiondevice @consists of a steel-faced play pins depending from the ends ofthe block, o, adj ustably secured on the bracket 0, cross-arm c of thelever c. By moving this and aslidingsteelfaced block, 0i, behindwhichlever c to the right or left the parts c c of the is pivoted a lever, o,having a cam projection divided n ut are moved from or toward and at itslower end, which bears against the block 95 45 against the threadedshaft B. By the use of a o2, and i'orcessaid block toward the block odivided nut I am enabled to move theshaftB and against the wire betweenthem. in or out quickly when. desired. The outer In operating mymachine, the end of the f end of the shaft B is supported by a Ushapedwire to be bent is passed between the blocks bearing at the end of theswinging arm f,`piv of the tension device, through the straighten` 10o5o oted to the under side of the table or bed A. ing device and throughthe opening in the f `lhis swinging arm j is held in position forstandard Z to the former, to whichit is secured.

The shaft B is slid inward, the parts c o of the divided nut beingseparated for that purpose,

cient tension by the tension device to canse l the wire to be tightlybound around the former. The corners of the former in its revolutionsraise the hammer L, and as the revolution of the former is quite rapidthe hammer will, when the corners of the former move downward and leavethe face of the hammer, drop upon the iiat sides of said former,flattening the wire against the sides of the former. The hammer when itstrikes the former rebounds a slight distance, andbefore it can againdescend the next succeeding corner of the former will strike the face ofthe hammer and again fully raise it. This blow which the ascendingcorner of the former gives to the hammer has the effect of bending thewire around said corner, and as the wire at this corner rubs along theface of the hammer in raising it the wire will be forced sharply aroundsaid corner. It will be noticedthat asthehammer is pivotally connectedto the standard Z it will have while being raised a slight horizontalmovement in a direction contrary to that in which the former is rotated.Thismovement'aidsinbendingthe wire around the corner which is raisingthe hammer. After the former has been filled with wire, the machine isstopped, the bearingarm f is swung to one side, and the former removedfrom the shaft B. The divided nut is then opened, the shaft B is pushedinward the proper distance, and another former is secured on the shaft,when the machine is again ready for operation.

The iianges Z2 of the standards are necessary only on the outside of thewings of the hammer, to prevent the hammer from being carried along withthe former as it is forced outward by the threads on the shaft workingthrough the nut C. These flanges might be dispensed with; but I preferto employ them, as they relieve the armsn of any lateral strain. Thethreads of the shaft and nut are given such a pitch that the former isthrust outward at each revolution a little more than the diameter of thewire. By thus feeding forward the former I remove all liability of onecoil of the wire being wound upon the preceding one, which is liable tooccur when the former and the devices from which the wire is drawn arestationary.

I am aware that it is old to use a heavy pivoted lever in connectionwith a revolving former; but in such'a device the wire is4 caused toconformwith the shape of the former by a continuous uniformv pressure,whereas in my machine the wire is subjected to sharp blows, which areeffective to bend the wire beyond the limit of elasticity, andconsequently give it a permanent set. After the'former is removed fromthe shaft B, the bent wire is stripped from the former, and is cut inone of its sides, thereby producing a blank ready to be incorporated inthe rim of a pan.

Formers having shapes other than that shown may be used; but in case around former is used some device should be added thereto which willoperate to raise the hammer in a manner similar to the corners of theformer shown.,

I claim herein as my inventionl l. In a machine for bending wire, arotating former, in combination with a drop-hammer, said parts being soconstructed and arranged that the wire is made to conform to the shapeof the former by a series of blows, substantially as set forth.

2. In a machine for bending wire, a rotating and longitudinally-mov ableformer,in com*- bination with a drop-hammer, substantially as described.

3. In a machine for bending wire, the former H and the shaft B, threadedand grooved at one end, in combination with the gear-wheel D, splined tosaid shaft, divided nut C, and means for opening and closing the dividednut, substantially as set forth.

4. In a machine for bending Wire,the former H, detachably secured to theshaft -B, in combination with the swinging bearing-arm f, substantiallyas set fort-h.

5. In a machine for bending wire, the former H, secured to the rotatingand longitudinallymovable shaft B, in combination lwith the tensiondevice o and the straightening device p, substantially as set forth.

6. In a machine for bending wire, the rotating andlongitudinally-movable former H, in combination with the drop-hammer L,having the Wings m, the guide-standards l Z, having the flanges Z, andthe arms n, substantially as set forth. v

7. In a machine for bending wire, the drophammer L, having side wings,m, in combination with the standards l l', so arranged as To allowa'slight horizontal movement to the hammer during lits verticalreciprocation, the arms n, pivotally connected to thehammer and thestandard Z, and the former, substantially as set forth.

In testimony whereof I have hereunto set my hand.

CHARLES F. BEAMAN.

Witnesses:

R. H. WHrrTLEsEY, C. M. CLARKE.

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